fix(boot-start): use LaunchDaemon on MacOS

[gaojunran]

fixes #422.

[greptile-apps]

Greptile Summary

• Bumps auto-launcher to 1.0.3 and switches the root-level macOS boot entry from LaunchAgentSystem (/Library/LaunchAgents/) to LaunchDaemonSystem (/Library/LaunchDaemons/), adding a legacy field plus cleanup_legacy() to migrate and clean up pre-1.0.3 installations. The migration order (write new entry first, then remove legacy) is correct.
• BootDisable::run() now performs a post-disable is_enabled() check so non-root users with an inaccessible legacy entry receive an actionable error instead of a false success message.
• BootStatus::run() gains a (false, false) if is_enabled() guard to surface a legacy-only entry rather than printing "Boot start is disabled", but the arm uses the same generic "Boot start is enabled" message as the fully-migrated case, giving root users who have not yet re-run sudo pitchfork boot enable no indication that their entry is still a LaunchAgent and needs migration.

Confidence Score: 4/5

Safe to merge; all previously identified P1 issues are addressed. Remaining findings are P2 (status UX and a misleading doc comment).

No P0 or P1 issues remain. The two P2 findings are a status message that omits migration guidance for root users upgrading from pre-1.0.3, and an overstated doc comment on disable(). Neither affects correctness or data integrity.

src/cli/boot.rs line 160 (legacy-only status arm) and src/boot_manager.rs lines 201–206 (disable doc comment)

Important Files Changed

Filename	Overview
src/boot_manager.rs	Core logic change: adds legacy (LaunchAgentSystem) field for migration/cleanup from pre-1.0.3; enable() now migrates after writing the new entry, disable() guards legacy removal on is_root(). Migration sequencing is correct. One minor status-reporting gap remains for root users with a legacy-only entry.
src/cli/boot.rs	Adds post-disable is_enabled() check to catch incomplete cleanup, updates status to handle the legacy-only case via a match guard, and calls cleanup_legacy on the already-enabled early-return path.
Cargo.toml	Bumps auto-launcher to 1.0.3 to pick up LaunchDaemonSystem support and plist dependency.
docs/cli/boot.md	Documentation updated to reflect /Library/LaunchDaemons/ for root-level macOS entries.

_{Reviews (15): Last reviewed commit: "[autofix.ci] apply automated fixes (atte..." | Re-trigger Greptile}